CN112701142A - Display device - Google Patents

Display device Download PDF

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Publication number
CN112701142A
CN112701142A CN202010903038.5A CN202010903038A CN112701142A CN 112701142 A CN112701142 A CN 112701142A CN 202010903038 A CN202010903038 A CN 202010903038A CN 112701142 A CN112701142 A CN 112701142A
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CN
China
Prior art keywords
display area
display
left edge
region
display device
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Pending
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CN202010903038.5A
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Chinese (zh)
Inventor
郑光珍
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Samsung Display Co Ltd
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Samsung Display Co Ltd
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Application filed by Samsung Display Co Ltd filed Critical Samsung Display Co Ltd
Publication of CN112701142A publication Critical patent/CN112701142A/en
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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/124—Insulating layers formed between TFT elements and OLED elements
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • G06F1/1637—Details related to the display arrangement, including those related to the mounting of the display in the housing
    • G06F1/1652—Details related to the display arrangement, including those related to the mounting of the display in the housing the display being flexible, e.g. mimicking a sheet of paper, or rollable
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1626—Constructional details or arrangements for portable computers with a single-body enclosure integrating a flat display, e.g. Personal Digital Assistants [PDAs]
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • G06F1/1637—Details related to the display arrangement, including those related to the mounting of the display in the housing
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K77/00—Constructional details of devices covered by this subclass and not covered by groups H10K10/80, H10K30/80, H10K50/80 or H10K59/80
    • H10K77/10—Substrates, e.g. flexible substrates
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/549—Organic PV cells

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Human Computer Interaction (AREA)
  • General Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

The present disclosure relates to a display device. The display device includes: the display panel comprises a light-emitting structure, a main display area, a left edge display area and a right edge display area, wherein the left edge display area and the right edge display area are connected with the main display area; and a first pattern film attached under the display panel to overlap with the main display area, the left edge display area, and the right edge display area, and having a higher rigidity (stiff) than the display panel. A stress dispersion portion is formed in the first pattern film.

Description

Display device
Technical Field
The present invention relates to a display device, and more particularly, to a display device including a curved surface.
Background
Recently, with the development of technology, display products having more excellent performance while being small and light are produced. Although a cathode ray tube television (CRT) has many advantages in terms of performance and price and is widely used in display devices, attention is paid to display devices, such as a plasma display device, a liquid crystal display device, and an organic light emitting display device, which have advantages of miniaturization, weight reduction, and low power consumption while overcoming the disadvantages of the CRT in terms of miniaturization and portability.
In particular, various configurations for reducing a frame portion that is a non-display region surrounding a display region of the display device have been proposed, and a configuration in which a part of the display device is arranged by bending has been proposed, but there is a problem of occurrence of breakage or crack due to bending.
Disclosure of Invention
In view of the above, it is an object of the present invention to provide a display device in which the occurrence of breakage or crack in a bent portion is reduced and a frame portion which is a non-display region is reduced.
A display device according to an embodiment for achieving the object of the present invention described above includes: the display panel comprises a light-emitting structure, a main display area, a left edge display area and a right edge display area, wherein the left edge display area and the right edge display area are connected with the main display area; and a first pattern film attached under the display panel to overlap with the main display area, the left edge display area, and the right edge display area, and having a higher rigidity (stiff) than the display panel. A stress dispersion portion is formed in the first pattern film.
In an embodiment of the present invention, the stress dispersion portion may be an opening in a slit shape.
In an embodiment of the present invention, the opening may be formed along a curved line.
In an embodiment of the present invention, the opening may have a circular arc shape.
In an embodiment of the present invention, the opening may have a circular arc shape having a plurality of slits with the same center.
In an embodiment of the present invention, the left edge display area may include: a first left edge display area connected to the main display area; and a second left edge display region and a third left edge display region respectively connected to both ends of the first left edge display region in a length direction. The stress dispersion unit may be formed in the second left edge display region and the third left edge display region.
In an embodiment of the present invention, the stress dispersion portion may be a groove formed on a surface of the first pattern film.
In an embodiment of the present invention, the groove may be formed on a surface of the first pattern film, the surface being in contact with the display panel.
In an embodiment of the present invention, the groove may be formed on a surface opposite to a surface of the first pattern film contacting the display panel.
In an embodiment of the present invention, the groove may have a plurality of circular arc shapes having the same center.
In an embodiment of the present invention, the left edge display region and the right edge display region may be curved in a direction perpendicular to the main display region to form a curved surface. It may be that a neutral plane (neutral plane) of the curved surface is located within the display panel so as to exert a compressive force in the first pattern film.
In an embodiment of the present invention, the display panel may further include: and a bending region connected to the main display region. The bending region may be bent in a direction perpendicular to the main display region such that a portion of the bending region is disposed to face a rear surface of the main display region and to overlap the main display region.
In an embodiment of the present invention, the display device may further include: and a second pattern film attached under the bending region of the display panel.
In an embodiment of the present invention, the display panel may be a flexible organic light emitting display panel, and the light emitting structure includes: a first electrode; an organic light emitting layer disposed on the first electrode; and a second electrode disposed on the organic light emitting layer.
In an embodiment of the present invention, the pattern film may include polyethylene terephthalate (PET).
A display device according to an embodiment for achieving the object of the present invention described above includes: a display panel, comprising: a main display area disposed on a plane formed along a first direction and a second direction perpendicular to the first direction; a curved display area connected to the main display area and curved in a third direction perpendicular to the first direction and the second direction with respect to the plane; and a pattern film attached under the display panel. A groove or a slit opening may be formed at a portion of the pattern film overlapping the curved display region.
In an embodiment of the present invention, a neutral plane (neutral plane) in the curved display area may be located within the display panel, so that a compressive force acts in the pattern film.
In an embodiment of the invention, the curved display area extends along the second direction, and the grooves or the slit openings are formed at two ends of the curved display area in the second direction.
In an embodiment of the present invention, the two ends of the curved display area in the second direction may have a rounded edge shape. It may be that the groove or the slit opening has a curved form adjoining the rounded edge shape.
(Effect of the invention)
According to an embodiment of the present invention, a display device includes: the display panel comprises a light-emitting structure, a main display area and a curved surface display area connected with the main display area; and a first pattern film attached under the display panel so as to overlap with the main display area and the curved display area and having a higher rigidity (stiffness) than the display panel. In the first pattern film, stress is dispersed by the stress dispersing portion which is a slit opening or a groove, thereby preventing a substance constituting the first pattern film from being extruded and bulging, and thus, damage and cracks of the display panel can be prevented from occurring at the corner portion of the display panel.
However, the effects of the present invention are not limited to the above-described effects, and various extensions can be made without departing from the scope of the idea and the field of the present invention.
Drawings
Fig. 1 is a top view of a display device according to an embodiment of the present invention.
Fig. 2 is a sectional view of the display device of fig. 1 taken along a second direction.
Fig. 3 is a plan view of a first pattern film of the display device of fig. 1.
Fig. 4 is a cross-sectional view of a display device according to an embodiment of the present invention.
Fig. 5 is a top view of a pattern film of the display device of fig. 4.
Fig. 6 is a perspective view showing a state in which the right edge display region, the left edge display region, and the bent region of the display device of fig. 1 are bent.
Fig. 7a is a sectional view taken along a first direction around the second left edge display area LEA2 in a state where the display device of fig. 1 is unfolded.
Fig. 7b is a sectional view taken along a first direction around the second left edge display area LEA2 in a state where the display device of fig. 1 is bent.
Fig. 8a is a sectional view taken along a second direction around the second left edge display area LEA2 in a state where the display device of fig. 1 is unfolded.
Fig. 8b is a sectional view taken along a second direction around the second left edge display area LEA2 in a state where the display device of fig. 1 is bent.
Fig. 9a and 9b are top views illustrating a change in the slit opening SL of the first pattern film PFL1 according to bending of the edge display region of the display device of fig. 1.
Fig. 10 is a top view of a first pattern film of a display device according to another embodiment of the present invention.
Fig. 11 is a top view of a first pattern film of a display device according to another embodiment of the present invention.
Fig. 12 is a sectional view of the display device of fig. 11 taken along a first direction around a second left edge display area LEA 2.
Fig. 13 is a block diagram illustrating an electronic device according to an embodiment of the present invention.
Fig. 14 is a diagram illustrating an example in which the electronic device of fig. 13 is implemented as a smartphone.
Fig. 15 and 16 are photographs showing the occurrence of a breakage or a crack at the end of the edge display region for explaining the effect of the present invention.
(description of reference numerals)
10: the display device PN: display panel
MDA: main display area
LEA: left edge display area
REA: right edge display area
PEL 1: first pattern film
SL: slit opening
Detailed Description
Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings.
Fig. 1 is a top view of a display device according to an embodiment of the present invention. Fig. 2 is a sectional view of the display device of fig. 1 taken along a second direction.
Referring to fig. 1 and 2, the display device 10 may include a display panel PN, a first pattern film PFL1, and a second pattern film PFL 2.
The display panel PN may include: a display area displaying an image; and a non-display area (not shown) surrounding the display area. The display regions may include a main display region MDA, a right edge display region REA, and a left edge display region LEA.
The main display area MDA may be disposed on a plane formed along a first direction D1 and a second direction D2 perpendicular to the first direction D1.
The right edge display area REA may extend toward the second direction D2 and meet the main display area MDA toward the first direction D1. The right edge display area REA may be a curved display area curved toward a third direction D3 perpendicular to the first and second directions D1 and D2 with respect to the plane in which the main display area MDA is disposed (refer to fig. 6).
The right edge display area REA may include a first right edge display area REA1, a second right edge display area REA2, and a third right edge display area REA 3. The first right edge display area REA1 may meet the main display area MDA toward the first direction D1. The second right edge display area REA2 and the third right edge display area REA3 may respectively meet both ends of the first right edge display area REA1 in the longitudinal direction, that is, both ends in the second direction D2.
The left edge display area LEA may extend toward the second direction D2 and meet the main display area MDA toward the first direction D1. The left edge display area LEA may be a curved display area curved toward a third direction D3 perpendicular to the first and second directions D1 and D2 with respect to the plane in which the main display area MDA is disposed (refer to fig. 6).
The left edge display region LEA may include a first left edge display region LEA1, a second left edge display region LEA2, and a third left edge display region LEA 3. The first left edge display area LEA1 may meet the main display area MDA toward the first direction D1. The second left edge display region LEA2 and the third left edge display region LEA3 may respectively be connected to both ends of the first left edge display region LEA1 in the length direction, that is, both ends in the second direction D2.
The display area including the main display area MDA, the left edge display area LEA, and the right edge display area REA may be entirely in a form of rounding corners in a rectangular shape. That is, the second left edge display region LEA2, the third left edge display region LEA3, the second right edge display region REA2, and the third right edge display region REA3 may have a rounded edge shape.
The display panel PN may further include a bending area BA. The bending area BA may be bent in a third direction D3 perpendicular to the main display area MDA, i.e., perpendicular to the first direction D1 and the second direction D2, such that a portion of the bending area BA is disposed to face the rear surface of the main display area MDA and to overlap the main display area MDA. A driving circuit for driving the display device 10 and a pad electrode for connection to an external device may be disposed in the bent area BA (see fig. 6).
The first pattern film PFL1 may be attached under the display panel PN to overlap with the main display area MDA, the left edge display area LEA, and the right edge display area REA. The first pattern film PFL1 may have higher rigidity (stiffness) than the display panel. The first pattern film PFL1 may be formed of a synthetic resin or the like. For example, the first pattern film PFL1 may include polyethylene terephthalate (PET).
The second pattern film PFL2 may be attached under the display panel PN to overlap a portion of the bent area BA. The second pattern film PFL2 may be spaced apart from the first pattern film PFL1, and may be formed of the same material.
The display panel PN may be a flexible organic light emitting display panel. For example, the display panel PN may include: a flexible base substrate; a thin film transistor and a circuit wiring disposed on the flexible base substrate; a first electrode electrically connected to the thin film transistor and the circuit wiring; a light-emitting layer disposed on the first electrode; and a second electrode disposed on the light emitting layer. On the other hand, the display panel PN may have various known structures as a flexible display panel, and detailed description thereof will be omitted.
Fig. 3 is a plan view of a first pattern film of the display device of fig. 1.
Referring to fig. 1 to 3, slit openings SL as stress dispersion portions may be formed at four corners of the first pattern film PFL1 of the display device 10, that is, portions corresponding to the second left edge display region LEA2, the third left edge display region LEA3, the second right edge display region REA2, and the third right edge display region REA 3.
That is, the slit openings SL may be formed at portions overlapping with the second left edge display region LEA2, the third left edge display region LEA3, the second right edge display region REA2, and the third right edge display region REA3 of the display panel PN.
The slit opening SL may be formed along a curved line. For example, the slit opening SL may have a curved form adjoining the rounded edge shape of the edge display region edge. For example, the slit opening SL may have a circular arc shape having a plurality of slit shapes with the same center. The slit opening SL may be formed on the first pattern film PFL1 using a process such as laser cutting.
On the other hand, in the present embodiment, although it is illustrated that the slit opening SL is formed along a curved line, it is not limited thereto. For example, the linear patterns may extend in the first direction D1 and the second direction D2, or may extend in a direction inclined at a predetermined angle to the first direction D1.
Fig. 4 is a cross-sectional view of a display device according to an embodiment of the present invention. Fig. 5 is a top view of a pattern film of the display device of fig. 4.
Referring to fig. 4 and 5, the display device may include a display panel PN and a pattern film PFL. The display device is substantially the same as the display device of fig. 1 to 3 except that the pattern film PFL is not divided and formed as one. Therefore, redundant description is omitted.
The pattern film PFL may include a main display area MDA, a right edge display area REA, a left edge display area LEA, and a bending area BA. The right edge display area REA may include a first right edge display area REA1, a second right edge display area REA2, and a third right edge display area REA 3. The left edge display region LEA may include a first left edge display region LEA1, a second left edge display region LEA2, and a third left edge display region LEA 3.
Slit openings SL as stress dispersion portions may be formed at four corners of the pattern film PFL, that is, portions corresponding to the second left edge display region LEA2, the third left edge display region LEA3, the second right edge display region REA2, and the third right edge display region REA 3.
Fig. 6 is a perspective view showing a state in which the right edge display region, the left edge display region, and the bent region of the display device of fig. 1 are bent. Fig. 7a is a sectional view taken along a first direction around the second left edge display area LEA2 in a state where the display device of fig. 1 is unfolded. Fig. 7b is a sectional view taken along a first direction around the second left edge display area LEA2 in a state where the display device of fig. 1 is bent. Fig. 8a is a sectional view taken along a second direction around the second left edge display area LEA2 in a state where the display device of fig. 1 is unfolded. Fig. 8b is a sectional view taken along a second direction around the second left edge display area LEA2 in a state where the display device of fig. 1 is bent. Fig. 9a and 9b are top views illustrating a change in the slit opening SL of the first pattern film PFL1 according to bending of the edge display region of the display device of fig. 1.
Referring to fig. 7a, 8a and 9a, the state of the display panel PN before bending is shown. No stress acts on the first pattern film PFL1, and thus, no stress acts on the slit aperture SL at each corner portion of the first pattern film PFL1, that is, the portion corresponding to the second left edge display region LEA2, the third left edge display region LEA3, the second right edge display region REA2, and the third right edge display region REA3, and the slit aperture SL may have a first width W1.
As can be understood from fig. 6, 7b, 8b and 9b, as the left edge display region LEA of the display panel PN is bent, stress is dispersed by the slit opening SL of the first pattern film PFL1 positioned under the second left edge display region LEA 2. In order to protect the configuration of the display panel PN, a neutral plane NP to which a compressive stress (compression) or a tensile stress (expansion) does not act when the left edge display region LEA of the display panel PN is bent may be designed to be located within the display panel PN. Thereby, a compressive stress acts on the first pattern film PFL1, the compressive stress acting not only on a section of the first direction D1 and the third direction D3 (refer to fig. 7b), but also in a direction of pushing out the first pattern film PFL1 along the second direction D2 (refer to thick arrows in fig. 6 and 8 b).
Accordingly, at the end of the first pattern film PFL1 in the second direction D2, the substance constituting the first pattern film PFL1 may be pushed out in the second direction D2 and swell due to the compressive stress (refer to fig. 15), and thus, the display panel may be damaged or cracked at the edge portion (refer to fig. 16). The slit opening SL may have a second width W2 (or a state in which the wall surfaces of the slit opening SL are in contact with each other) smaller than the first width W1.
According to the present embodiment, stress is dispersed by the slit openings SL of the first pattern film PFL1 located under the second left edge display region LEA2, thereby preventing a phenomenon in which substances constituting the first pattern film PFL1 are pushed out in the second direction D2 to swell, and thus, damage and crack generation of the display panel can be prevented at the corner portions of the display panel PN.
Although not described in detail, the slit apertures SL corresponding to the portions corresponding to the third left edge display region LEA3, the second right edge display region REA2, and the third right edge display region REA3 also serve to prevent damage to the display panel and the occurrence of cracks in the corner portions of the display panel PN as a whole.
Fig. 10 is a top view of a first pattern film of a display device according to another embodiment of the present invention.
Referring to fig. 10, the display device is substantially the same as the display device described in fig. 1 to 9b except that the stress dispersion portion is formed as a groove GR instead of the slit opening, and thus repeated description is omitted.
The display device may include a display panel and a first pattern film PFL 1.
The display panel may include a main display area MDA, a right edge display area REA, and a left edge display area LEA displaying an image. The right edge display area REA may include a first right edge display area REA1, a second right edge display area REA2, and a third right edge display area REA 3. The left edge display region LEA may include a first left edge display region LEA1, a second left edge display region LEA2, and a third left edge display region LEA 3.
Stress dispersion portions may be formed at four corners of the first pattern film PFL1 of the display device, that is, portions corresponding to the second left edge display region LEA2, the third left edge display region LEA3, the second right edge display region REA2, and the third right edge display region REA 3.
The stress dispersion portion may be a groove GR formed on the surface of the first pattern film PFL 1. The groove GR may be formed on a surface of the first pattern film PFL1 that meets the display panel.
On the other hand, on the drawings, the grooves GR are illustrated to have a curved shape, but are not limited thereto.
Fig. 11 is a top view of a first pattern film of a display device according to another embodiment of the present invention. Fig. 12 is a sectional view of the display device of fig. 11 taken along a first direction around a second left edge display area LEA 2.
Referring to fig. 11 and 12, the display device is substantially the same as the display device described in fig. 10 except for the position of the surface where the groove GR is formed, and therefore, redundant description is omitted.
The display device may include a display panel and a first pattern film PFL 1.
The display panel may include a main display area MDA, a right edge display area REA, and a left edge display area LEA displaying an image. The right edge display area REA may include a first right edge display area REA1, a second right edge display area REA2, and a third right edge display area REA 3. The left edge display region LEA may include a first left edge display region LEA1, a second left edge display region LEA2, and a third left edge display region LEA 3.
Stress dispersion portions may be formed at four corners of the first pattern film PFL1 of the display device, that is, portions corresponding to the second left edge display region LEA2, the third left edge display region LEA3, the second right edge display region REA2, and the third right edge display region REA 3.
The stress dispersion portion may be a groove GR formed on the surface of the first pattern film PFL 1. The groove GR may be formed on a surface opposite to a surface of the first pattern film PFL1 that meets the display panel.
On the other hand, on the drawings, the grooves GR are illustrated to have a curved shape, but are not limited thereto.
Fig. 13 is a block diagram illustrating an electronic device according to an embodiment of the present invention. Fig. 14 is a diagram showing an example in which the electronic device of fig. 13 is implemented as a smartphone.
Referring to fig. 13 through 14, the electronic apparatus 500 may include a processor 510, a memory device 520, a storage device 530, an input-output device 540, a power supply 550, and a display device 560. At this time, the display device 560 may correspond to the display device of fig. 1. The electronic device 500 may further include various ports (ports) that enable communication with video cards, sound cards, memory cards, USB devices, etc., or with other systems. In an embodiment, the electronic device 500 may be implemented as a television. In another embodiment, as shown in fig. 14, the electronic device 500 may be implemented as a smart phone. However, this is exemplary, and the electronic device 500 is not limited thereto. For example, the electronic device 500 may also be implemented as a mobile phone, a video phone, a smart tablet (smart pad), a smart watch (smart watch), a tablet (tablet) PC, a vehicle navigator, a computer monitor, a notebook computer, a Head Mounted Display (HMD), and the like.
The processor 510 may perform specific calculations or tasks (tasks). According to an embodiment, the Processor 510 may be a microprocessor (micro Processor), a Central Processing Unit (CPU), an Application Processor (AP), or the like. The processor 510 may be connected to other components through an address bus, a control bus, and a data bus, according to embodiments, the processor 510 may also be connected to an expansion bus such as a Peripheral Component Interconnect (PCI) bus, the Memory device 520 may store data required for the operation of the electronic apparatus 500, for example, the Memory device 520 may include an Erasable Programmable Read-Only Memory (EPROM) device, an Electrically Erasable Programmable Read-Only Memory (EEPROM) device, a flash Memory device (flash Memory device), a Phase Change Random Access Memory (Change Random Access Memory; PRAM) device, a Resistance Random Access Memory (Resistance Random Access Memory; RRAM) device, and a Memory device, Non-volatile Memory devices such as Nano Floating Gate Memory (NFGM) devices, Polymer Random Access Memory (PoRAM) devices, Magnetic Random Access Memory (MRAM), Ferroelectric Random Access Memory (FRAM) devices, and the like, and/or volatile Memory devices such as Dynamic Random Access Memory (DRAM) devices, Static Random Access Memory (SRAM) devices, Mobile DRAM devices, and the like, the Memory devices 530 may include Solid State Drives (SSDs), Hard Disk drives (Hard disks; HDDs), compact Disk-read Only memories (CD-ROMs), and the like, the input and output devices 540 may include keyboards, keypads, and the like, Input means such as touch panels, touch screens, and mice, and output means such as speakers, printers, and the like. The power supply 550 may supply power required for the operation of the electronic device 500.
The display unit 560 may be connected to other components via the bus or other communication link. According to an embodiment, the display device 560 may also be included in the input-output device 540. As described above, the display device 560 includes: the display panel comprises a light-emitting structure, a main display area and a curved surface display area connected with the main display area; and a first pattern film attached under the display panel to overlap the main display area and the curved display area and having a higher rigidity (stiffness) than the display panel. In the first pattern film, stress is dispersed by the stress dispersing portion which is a slit opening or a groove, thereby preventing a substance constituting the first pattern film from being pushed out and bulging, and thus, damage and cracks of the display panel can be prevented from occurring at the corner portion of the display panel.
However, since this has already been described above, a repetitive description thereof will be omitted.
Fig. 16 is a photograph showing the occurrence of a crack or a crack at the end of the edge display region for explaining the effect of the present invention.
Referring to fig. 16, at the end of the edge display region, extrusion at the edge occurs as the pattern film is bent, and cracks, breakage, and the like of the display panel may occur due to the extrusion, and according to the embodiment of the present invention, the stress is dispersed by the stress dispersing portion as the slit opening or the groove, so that the cracks, breakage, and the like of the display panel can be prevented
(possibility of Industrial utilization)
The present invention can be applied to an organic light emitting display device and various electronic apparatuses including the same. For example, the present invention may be applied to a mobile phone, a smart phone, a video phone, a smart tablet, a smart watch, a tablet PC, a navigator for a vehicle, a television, a computer monitor, a notebook computer, a head-mounted display, and the like.
Although the present invention has been described above with reference to the exemplary embodiments thereof, it will be understood by those having ordinary knowledge in the art that various modifications and changes can be made to the present invention within a scope not exceeding the idea and field of the present invention described in the claims.

Claims (10)

1. A display device, comprising:
the display panel comprises a light-emitting structure, a main display area, a left edge display area and a right edge display area, wherein the left edge display area and the right edge display area are connected with the main display area; and
a first pattern film attached under the display panel to overlap with the main display area, the left edge display area, and the right edge display area and having higher rigidity than the display panel,
a stress dispersion portion is formed in the first pattern film.
2. The display device according to claim 1,
the stress dispersion part is a slit-shaped opening.
3. The display device according to claim 2,
the opening is formed along a curved line.
4. The display device according to claim 3,
the opening is in the shape of a circular arc.
5. The display device according to claim 4,
the opening has a circular arc shape in the form of a plurality of slits having the same center.
6. The display device according to claim 1,
the left edge display area includes: a first left edge display area contiguous with the main display area; and a second left edge display region and a third left edge display region respectively connected to both ends of the first left edge display region in a length direction,
the stress dispersion part is formed in the second left edge display region and the third left edge display region.
7. The display device according to claim 1,
the stress dispersion portion is a groove formed on a surface of the first pattern film.
8. The display device according to claim 1,
the left edge display region and the right edge display region are curved in a direction perpendicular to the main display region to form curved surfaces,
the neutral surface of the curved surface is located inside the display panel, thereby applying a compressive force in the first pattern film.
9. The display device according to claim 1,
the display panel further includes: a bending region connected to the main display region,
the bending region is bent in a direction perpendicular to the main display region such that a portion of the bending region is disposed to face a rear surface of the main display region and to overlap the main display region.
10. The display device according to claim 1,
the display panel is used as a flexible organic light emitting display panel, and the light emitting structure comprises: a first electrode; an organic light emitting layer disposed on the first electrode; and a second electrode disposed on the organic light emitting layer.
CN202010903038.5A 2019-10-23 2020-09-01 Display device Pending CN112701142A (en)

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